Datasheet > PI6C991-5JI

PI6C991-5JI

更新时间： 2024-11-18 23:27:39

品牌	Logo	应用领域
其他 - ETC		时钟驱动器
页数	文件大小	规格书
9页	529K
描述
Eight Distributed-Output Clock Driver

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PI6C991-5JI 数据手册

PI6C991

5V High-Speed Programmable

Skew Clock Buffer - SuperClock^TM

Product Features

Description

• Four pairs of programmable skew outputs

• 3.75 to 80 MHz output operation

The PI6C991 is a low-skew, low jitter, 5V phase-lock loop (PLL)

programmable skew clock driver, for high performance comput-

ing and networking applications. This part offers user selectable

skew-control of 4 output pairs, providing the timing delays neces-

sary to optimize high performance clock distribution circuits.

• User-selectable output functions:

− Selectable skews

− Inverted and noninverted

Each output can be hardwired to one of nine delay or function

configurations. Delay increments are determined by the input clock

frequency and the configurations selected by the user.

− Operation at ½ and ¼ input frequency

− Operation at 2X and 4X input frequency

• Low skew <100ps typical, same pair. 250ps max.

• Allow REF clock input to have Spread Spectrum

modulation for EMI reduction

The PI6C991 allows the REF clock input to have Spread Spectrum

modulation for EMI reduction.

The PI6C991 is pin-compatible with Cypress RoboClock CY7B991,

with improvedAC/DC characteristics.

• 2X, 4X, ½ and ¼ outputs

• 3-level inputs for skew and output frequency control

• External feedback, internal loop filter

• Low cycle-to-cycle Jitter: <25ps RMS

• Duty cycle of output clock signals: 45% min. 55% max.

• Compatible with Pentium based processor

• Same pinout as Cypress CY7B991

• Packaged in Plastic 32-pin PLCC Package

Logic Block Diagram

Pin Configuration

32-Pin

PS8448

01/27/00

12 3 4 5 6 7...9

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与PI6C991-5JI相关器件

型号	品牌	获取价格	描述	数据表
PI6C991I	PERICOM	获取价格	Clock IC \| 750ps Accuracy. 5V. TTL. 3.75 to 80 MHz. Industrial Temp. Operation
PI6C991-IJ	ETC	获取价格	Eight Distributed-Output Clock Driver
PI6C991J	ETC	获取价格	Eight Distributed-Output Clock Driver
PI6C991-J	PERICOM	获取价格	暂无描述
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PI6C9930Q	ETC	获取价格	Eight Distributed-Output Clock Driver
PI6C9930QX	PERICOM	获取价格	PLL Based Clock Driver, 6C Series, 8 True Output(s), 0 Inverted Output(s), PDSO24, 0.150 I
PI6C9930S	ETC	获取价格	Eight Distributed-Output Clock Driver